docs: def _validate_min_version(min_version):
    """Validates the extension version matches the requested version.
  
    Args:
      min_version: Minimum version passed as a query param when establishing the
        connection.
  
    Returns:
      An ExtensionVersionResult indicating validation status. If there is a
      problem, the error_reason field will be non-empty.
    """
    if min_version is not None:
      try:
        parsed_min_version = version.StrictVersion(min_version)
      except ValueError:
        return ExtensionVersionResult(
            error_reason=ExtensionValidationError.UNPARSEABLE_REQUESTED_VERSION,
            requested_extension_version=min_version)
  
      if parsed_min_version > HANDLER_VERSION:
        return ExtensionVersionResult(
            error_reason=ExtensionValidationError.OUTDATED_VERSION,
            requested_extension_version=str(parsed_min_version))
  
    return ExtensionVersionResult(
        error_reason=None, requested_extension_version=min_version)